Boileb



June 7, 1927. 1,631,708

5. L. TILL BOILER FEED TRAP Filed Oct. 15. 1926 w 2'6 QI Q I M 9 a A oINVENTOR 5.1,. Tril Patented June 7, 1927.

STEVEN L. 'IILL, OF CHICAGO, ILLINOIS.

BOILER FEED TRAP.

Application filed October 15, 1928. Serial No. 141,795.

My invention relates to feed traps for boilers and has for its object toprovide means for automatically supplying water to the boiler.

A further object is to provide a device of this character which isnoiseless in its operation, simple in construction and reliable inperformance.

Other objects and advantages will become apparent from the followingdetailed description when viewed together with the accompanying drawingforming part hereof wherein like numerals refer to like parts throughoutthe specification and in which Figure 1 is a vertical sectional viewthrough the trap,

Figure 2 is a similar view in cross section, and I Figure 3 is a sectiontaken along a line 3-3 of Figure 9..

Referring now to the drawing 1 have disclosed my invention as comprisinga housing 5 having a head 6 and through which is transversely arranged atubular shaft 4'. The shaft has one end rotatably mounted in a removableplate 8 secured to one side of the housing, the plate being providedwith a plug 9. T ie opposite end of the shaft is rotatably carried in asubstantially similar plate 10 rcmovably secured to the opposite side ofthe housing and also provided with a plug 11.

A sleeve 12 is arranged on the end of the shaft extending within theplate 10 and is fixedly secured in the plate, the shaft being freelyrotatable within the sleeve. The plate is provided with a pair ofopenings preferably arranged at right angles with respect to each other,one opening 13 extending upwardly from the center of the plate and hasan exhaust pipe 1 1 connected thereto. The other opening 15 extends fromthe center of the plate toward one side thereof and has a steamfeed pipe16 connected thereto. The sleeve 12 is provided with a pair of passages17, one of which communicates with the opening 13 and the other of whichcommunicates with the opening 15 and the shaft is provided with apassage 18 selectively communicable with either of the passages 17. Theshaft being rotatable, it is obvious that the passage 18 is adapted toregister either with the steam pipe 16 or the exhaust pipe 14.

Intermediate the ends of the shaft is provided an opening 19communicating with a small chamber 20 formed within a bushing 21 tivedly secured to the shaft within the housing. Shoulders 2 are formed onopposite sides of the bushing to one of which is secured a vacuum cup 23opening downwardly and above which'is arranged a bowl 2% openingupwardly, and to the opposite shpulder is secured a counter-weight float25. .lilxtending upwardly from the bushing and coimnunioating with thechamber 20 is an overflow pipe 26 having its outlet within the housing.

A feed pipe 27 is connected to the base of the housing terminating in acoupling 28 through one side of which extends a water feed pipe 29having interposed therein a check valve 30 and through the opposite sideof which extends a steam pipe 31 leading to the boiler and havinginterposed therein a check valve 32.

A trigger mechanism is arranged within the housing immediately beneaththe counter-weight float 25 and comprises a small float 33 pivotallymounted upon a support 3 1 carried upon a removable plate 85 secured tothe base of the housing. A suitable gauge 36 may be arranged at one sideof the housing.

In the operation of the device when the trap or housing is filled withwater the device will occupy a position substantially similar to thatshown by the full lines in Figure 1. Steam therefore is permitted toenter the tubular shaft 7 from the pipe 16 through the passageways 17and 18 and will enter-the housing through the opening 19 and theoverflow pipe 26. Such action will force the water out through the pipe27 past and allowing the water to enter by way of the supply pipes 29and 27 filling the trap and allowing the steam therein to escape outthrough the shaft 7 by Way of the exhaust 1A. As soon as sufficientWater has again entered the trap the parts will be returned to theposition as shown in the full lines in Figure 1 so as to continue theautomatic feed of the water-as described above.

I- claim: y

1. A feed trap Comprising a housing, a

tubular shaft rotatablyarranged therein,

steam feed andexhaust pipes communicating float carried by the shaft andadapted to with said shaft, a water pipe entering "the housing and meanswithin the housing for 3 rotating theshaft to selectively register witheither the steam feed or exhaust p pe.

2. A feed trap for boilers comprising a housing, a tubular shaftarranged therein,

steam feed and exhaust pipes Connected theretofa Water feed pipeentering the lions ingand a float secured to the shaft and ari vrangedto rotate the same so as to successively register theshaft with saidfeed and exhaust pipes.

feed.trapcomprising a housing, a tubularshaft rotatably mounted therein,a

sleeve at one end of the shaft, passages through the sleeve and theshaft, a steam feed pipe and a steam exhaust pipe coinmunicatingwith thepassages in said sleeve, a water pipe entering the housing, and a rotatethe same so as to selectively 'egister the passage in the shaft with thepassages in said sleeve. v

I 4. A'feed trap comprising a housing, a' tubular shaft rotatablymounted therein, a

sleeve at one end of the shaft, passages in said shaft 'and'said sleeve,a steam feedpipe and a steam exhaust pipecommunicating with the passagesin said sleeve, a water feed A IMPQGHtGllDg the housing, a bushingformed 7,

onthe-shaft Within the housing and having .an openiiig'extending towithin the shaft,

shoulders formed at opposite sides of the bushing, a vacuum cup formedon one of said shoulders, a float formed on the other of said shouldersand a trigger-float operatively engaging said first named float.

5. A feed trap comprising a housing, a

' tubular shaft rotatably carried therein, a

sleeveat one end of the shaft, passages in the sleeve and the shaft, asteam feed pipe communicatin'g With one of said sleeve passages, a steamexhaust pipe communicating with another of said sleeve passages, abushing formed on the shaft within the housing and having an openingcommunicating to withinthe shaft," shoulders formed on said bushing, avacuum cup having a bowl thereabove attached to one of said shoulders, afloat at tachedto the other of said shoulders, a triggar-float pivotallymounted within the housmg and adapted to engage said first named float,a water feed p pe communicating with the housing and with the boiler andmeans interposed in said pipeto control the flow of water therethrougline and having an opening therein, intake; and exhaustpipescominunicable with said opening, means carried on the shaft adaptedtomove the opening intoor out of communication with eitherof said pipesand means affording access froin'the feed-line th ou h theshaft. l V

8. A feed trap comprising, a

mountedhollow' shaft interposed in afeed line and havinganopeningthereimintake and exhaust pipes communicable with said opening,means carried on the shaft adapted to move the opening into or out ofcoimminication with either ofsaid' pipes and a trap;

chamber having communication with said shaftand' the feed line. I I 9;I11 combination witha boiler feed line of a' feed trap interposedtherein comprising a rotatably mounted shaft having an opena ing, intakeand exhaust pipes communicable therewith, means carried on the shaftfor;

moving said opening into or out of commie nication with either of saidpipes and a trap chamber interposed between the shaft and the feed lineand communicable with either thereof- 7 I t 10. In combii'iation with aa V I boiler feed line of afejedtrap interposed therein comprising i z arotatably mounted shaft having a plurality] of openings, intake andvexhaust pipes com- 1 municable withone of said openings, means carriedon the shaft for moving saidopen- -ing into or out of communication witheither of said pipes and a trap chambercommunicating with the feed lineand the other ofsaid openings.

11. In combination With a boiler feed line of a feed trap comprising atrap chamber interposed therein, a hollowshaft rotatably mounted in saidchamber andhaving ope'nings communicating within and without thechamber, intake and exhaust pipes communicable with said opening withoutthe chamber,

a float mounted on the shaft Within the if chamber and meansreleasablyengaging the float adapted to temporarily restrain movement ofthe shaft. V p 12. In combination with aboilerfeed line of 'a'feed trapcomprisin a trap chamber interposed therein, a holl ow shaft rota-tablymounted in said chamberiand having open ings communicating within andwithout the chamber, intake and exhaust pipes communicable with saidopening Without'the chainber, a float mounted on the shaft within the Vchamber, means releasably engaging the float whereby to restrainmovement of the shaft and means connected with the float adapted torelease said restraining means.

13. In combination with a boiler feed line of a feed trap comprising atrap chamber interposed therein, a hollow shaft rotatably mounted insaid chamber and having openings communicating within and without thechamber, intake and exhaust pipes communicable with said opening withoutthe chamber, a floatmounted on the shaft within the chamber, meansreleasably engaging the float whereby to restrain movement of the shaftand a suction cup connected with the float adapted to release saidrestraining means.

In testimony whereof I affix my signature.

STEVEN L. TILL.

